. >> this is one of the foremost children's hospitals in the united states. we take some very difficult cases here and we're growing to meet that need. >> the expansion is part of the stanford university medical center's renewal project. >>> a ban was supposed to take effect today on medical marijuana, but opponents gathered 50,000 signatures to put the question on the ballot. the city council must now decide whether to rescind the ban or let it go to the voters. >>> a new stadium has helped the san francisco 49ers become one of the most valuable franchises in the nfl. forbes sais the niners are worth about 1.2 billion, up 19% from last year. the bay area's other football team is at the other end of the spectrum. the raiders are listed at no. 30. the dallas cowboys ranked first with a value of 2.1 billion. >>> it is a moment that may have transcended politics at the democratic national convention. the unannounced appearance in the last hour and the role the special guest played in getting the night started. >>> things are going to start to warm up. i'll show